Noyon (Oise). École Weissenburger

École doctorale de l ' école Polytechnique Thèse

This chapter is dedicated to the de nition of relevant sets of shapes and that of de ning a metric on them. Following a recent research monograph by Delfour and Zolesio [33], we consider the characteristic functions of the subsets of R2 and their distance functions. The L2 norm of the di erence of characteristic functions, the L∞ and the W 1,2 norms of the di erence of distance functions de ne ...

École Polytechnique

This report presents quantum walks which are the quantum counterparts of classical random walks. Quantum walks are first defined on general graphs and the possibility of very different behavior between a classical random walk and its quantum analogue is illustrated with a simple graph. A generalization of the quantum walk protocol for a particle in a one-dimensional chain, by using several type...

École Normale Supérieure

Effect of oise Reduction on Reaction Time to Speech in oise

In moderate levels of noise, listeners report that noise reduction (NR) processing can improve the perceived quality of a speech signal as measured on a typical MOS rating scale. Most quantitative experiments of intelligibility, however, show that NR reduces the intelligibility of noisy speech signals, and so should be expected to increase the cognitive effort required to process utterances. To...

École Centrale Des Arts Et Manufactures « École Centrale Paris »

.............................................................................................................................. IV Table of contents...................................................................................................................... V Chapter